* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-size: 18px;
    color: #fff;
}

/* chrome */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

/* 火狐浏览器 */
input[type="number"] {
    -moz-appearance: textfield;
}

.container {
    overflow: hidden;
    margin: 100px auto;
    width: 232px;
    height: 321px;
    box-shadow: 1px 1px 10px rgba(0, 0, 0, .8);
    border-radius: 8px;
}

.container .header_show {
    height: 80px;
    width: 100%;
    font-size: 38px;
    background-color: #242426;

}

.container .header_show .show {
    position: relative;

}

.container .header_show .show .time {
    position: absolute;
    font-size: 12px;
    color: #ffffff;
    top: 8px;
    right: 8px;

}

.container .header_show .show .show_calc {
    position: absolute;
    top: 30px;
    right: 10px;
}

.container .header_show .show .show_calc input {
    border: none;
    background-color: #242426;
    color: #ffffff;
    font-size: 38px;
    text-align: right;

}

.container .header_show .show .show_calc input:focus {
    outline: none;
}

.container .header_show .show .close {
    position: absolute;
    top: 8px;
    left: 8px;
    height: 13px;
    width: 13px;
    border-radius: 50%;
    background-color: #ed695d;

}

.container .header_show .show .min {
    position: absolute;
    top: 8px;
    left: 28px;
    height: 13px;
    width: 13px;
    border-radius: 50%;
    background-color: #f4bf4f;
}

.container .header_show .show .max {
    position: absolute;
    top: 8px;
    left: 48px;
    height: 13px;
    width: 13px;
    border-radius: 50%;
    background-color: #62c554;
}

.body_btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    height: 241px;
    text-align: center;
    line-height: 48px;
    user-select: none;
}

.f1 {
    flex: 1;
}

.f2 {
    flex: 2;
}

.body_btn .first_row {
    display: flex;
}

.body_btn .second_row {
    display: flex;
}

.body_btn .third_row {
    display: flex;
}

.body_btn .fourth_row {
    display: flex;
}

.body_btn .fifth_row {
    display: flex;
}

.container .btn_dark {
    cursor: pointer;
    background-color: #3a383b;
}

.container .btn_dark:active {
    background-color: #5a5b5c;
}

.container .btn_number {
    cursor: pointer;
    background-color: #5a5b5c;
}

.container .btn_number:active {
    background-color: #9d9d9d;
}

.container .btn_calc {
    cursor: pointer;
    background-color: #f2a33c;
}

.container .btn_calc:active {
    cursor: pointer;
    background-color: #c0812d;
}



